HP EliteBook 850 G4 Maintenance And Service Manual page 52

4. To remove the hard drive cover from the hard drive, remove the 4 Phillips M3.0×3.0 screws (1) that
secure the cover to the drive, and then lift the cover up and off the hard drive (2).
Reverse this procedure to install a hard drive.
40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts